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A148326 as a simple table

na(n)
01
11
22
35
414
542
6127
7406
81384
94674
1016231
1157908
12207172
13759480
142799649
1510388278
1639267427
17148491557
18566578382
192183452049
208421213079
2132796434160
22128237720641
23502717621685
241986380784640
257859822136004
2631232721688184
27124731244842505
28498653956893148
292003101284597936

[1,1,2,5,14,42,127,406,1384,4674,16231,57908,
 207172,759480,2799649,10388278,39267427,148491557,
 566578382,2183452049,8421213079,32796434160,
 128237720641,502717621685,1986380784640,
 7859822136004,31232721688184,124731244842505,
 498653956893148,2003101284597936]